Finding the Fourth Proportional to 9,258.22, 12,780.56 and 5,905.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,258.22 : 12,780.56 = 5,905.63 : x
2. Step 2: Convert to fraction form
   9,258.22/12,780.56 = 5,905.63/x
3. Step 3: Cross multiply
   9,258.22x = 12,780.56 × 5,905.63
4. Step 4: Simplify right side
   9,258.22x = 75,477,258.55
5. Step 5: Solve for x
   x = 75,477,258.55/9,258.22
6. Step 6: Final answer
   x = 8,152.46